[README] Update the Xcode version
[README] Update the Xcode version

uasys/swift,xedin/swift,return/swift,huonw/swift,zisko/swift,parkera/swift,gribozavr/swift,rudkx/swift,jckarter/swift,rudkx/swift,jckarter/swift,karwa/swift,uasys/swift,xwu/swift,parkera/swift,apple/swift,CodaFi/swift,felix91gr/swift,xwu/swift,parkera/swift,jopamer/swift,uasys/swift,xwu/swift,felix91gr/swift,xedin/swift,brentdax/swift,huonw/swift,OscarSwanros/swift,benlangmuir/swift,shahmishal/swift,airspeedswift/swift,alblue/swift,benlangmuir/swift,hughbe/swift,danielmartin/swift,shajrawi/swift,lorentey/swift,hooman/swift,milseman/swift,lorentey/swift,frootloops/swift,atrick/swift,djwbrown/swift,lorentey/swift,uasys/swift,tkremenek/swift,apple/swift,tjw/swift,jmgc/swift,djwbrown/swift,roambotics/swift,nathawes/swift,hooman/swift,swiftix/swift,sschiau/swift,allevato/swift,alblue/swift,alblue/swift,zisko/swift,frootloops/swift,CodaFi/swift,deyton/swift,airspeedswift/swift,amraboelela/swift,harlanhaskins/swift,austinzheng/swift,glessard/swift,tjw/swift,sschiau/swift,return/swift,milseman/swift,ahoppen/swift,ahoppen/swift,JGiola/swift,JGiola/swift,shahmishal/swift,alblue/swift,nathawes/swift,tkremenek/swift,lorentey/swift,atrick/swift,stephentyrone/swift,xwu/swift,shajrawi/swift,alblue/swift,ahoppen/swift,shajrawi/swift,jckarter/swift,jmgc/swift,glessard/swift,apple/swift,austinzheng/swift,felix91gr/swift,shajrawi/swift,xedin/swift,shajrawi/swift,natecook1000/swift,xedin/swift,felix91gr/swift,danielmartin/swift,natecook1000/swift,amraboelela/swift,hughbe/swift,amraboelela/swift,shahmishal/swift,roambotics/swift,hooman/swift,shajrawi/swift,jckarter/swift,airspeedswift/swift,OscarSwanros/swift,return/swift,practicalswift/swift,devincoughlin/swift,brentdax/swift,airspeedswift/swift,atrick/swift,brentdax/swift,practicalswift/swift,devincoughlin/swift,hughbe/swift,devincoughlin/swift,parkera/swift,danielmartin/swift,danielmartin/swift,harlanhaskins/swift,roambotics/swift,huonw/swift,hughbe/swift,CodaFi/swift,ahoppen/swift,karwa/swift,gribozavr/swift,deyton/swift,stephentyrone/swift,tjw/swift,gribozavr/swift,benlangmuir/swift,atrick/swift,stephentyrone/swift,CodaFi/swift,gregomni/swift,roambotics/swift,benlangmuir/swift,tkremenek/swift,nathawes/swift,swiftix/swift,return/swift,harlanhaskins/swift,JGiola/swift,return/swift,milseman/swift,harlanhaskins/swift,frootloops/swift,OscarSwanros/swift,return/swift,gregomni/swift,allevato/swift,aschwaighofer/swift,tjw/swift,nathawes/swift,glessard/swift,swiftix/swift,lorentey/swift,xwu/swift,felix91gr/swift,karwa/swift,huonw/swift,jckarter/swift,jopamer/swift,stephentyrone/swift,hooman/swift,zisko/swift,nathawes/swift,sschiau/swift,rudkx/swift,lorentey/swift,hooman/swift,parkera/swift,gregomni/swift,tkremenek/swift,practicalswift/swift,allevato/swift,austinzheng/swift,roambotics/swift,aschwaighofer/swift,jmgc/swift,shahmishal/swift,tjw/swift,glessard/swift,jopamer/swift,gribozavr/swift,OscarSwanros/swift,airspeedswift/swift,djwbrown/swift,huonw/swift,danielmartin/swift,xedin/swift,jckarter/swift,uasys/swift,shahmishal/swift,allevato/swift,djwbrown/swift,lorentey/swift,austinzheng/swift,sschiau/swift,practicalswift/swift,alblue/swift,shajrawi/swift,jmgc/swift,xedin/swift,karwa/swift,gribozavr/swift,karwa/swift,parkera/swift,airspeedswift/swift,rudkx/swift,shahmishal/swift,deyton/swift,xwu/swift,xedin/swift,natecook1000/swift,hughbe/swift,karwa/swift,glessard/swift,shahmishal/swift,nathawes/swift,amraboelela/swift,austinzheng/swift,amraboelela/swift,jopamer/swift,hooman/swift,JGiola/swift,swiftix/swift,harlanhaskins/swift,danielmartin/swift,huonw/swift,felix91gr/swift,nathawes/swift,jckarter/swift,zisko/swift,return/swift,xedin/swift,devincoughlin/swift,swiftix/swift,stephentyrone/swift,benlangmuir/swift,gribozavr/swift,swiftix/swift,allevato/swift,brentdax/swift,gregomni/swift,zisko/swift,milseman/swift,karwa/swift,benlangmuir/swift,amraboelela/swift,jopamer/swift,brentdax/swift,deyton/swift,stephentyrone/swift,shahmishal/swift,allevato/swift,natecook1000/swift,hughbe/swift,parkera/swift,practicalswift/swift,devincoughlin/swift,airspeedswift/swift,gribozavr/swift,ahoppen/swift,jmgc/swift,jopamer/swift,practicalswift/swift,uasys/swift,frootloops/swift,aschwaighofer/swift,amraboelela/swift,djwbrown/swift,deyton/swift,milseman/swift,brentdax/swift,JGiola/swift,CodaFi/swift,apple/swift,shajrawi/swift,huonw/swift,apple/swift,djwbrown/swift,rudkx/swift,austinzheng/swift,tkremenek/swift,zisko/swift,sschiau/swift,frootloops/swift,sschiau/swift,parkera/swift,aschwaighofer/swift,devincoughlin/swift,tjw/swift,sschiau/swift,xwu/swift,austinzheng/swift,deyton/swift,djwbrown/swift,milseman/swift,milseman/swift,aschwaighofer/swift,tkremenek/swift,tkremenek/swift,atrick/swift,harlanhaskins/swift,hooman/swift,aschwaighofer/swift,gregomni/swift,zisko/swift,karwa/swift,rudkx/swift,deyton/swift,allevato/swift,JGiola/swift,CodaFi/swift,natecook1000/swift,frootloops/swift,jopamer/swift,frootloops/swift,uasys/swift,jmgc/swift,jmgc/swift,atrick/swift,CodaFi/swift,danielmartin/swift,OscarSwanros/swift,practicalswift/swift,aschwaighofer/swift,gregomni/swift,sschiau/swift,stephentyrone/swift,felix91gr/swift,swiftix/swift,alblue/swift,hughbe/swift,OscarSwanros/swift,lorentey/swift,glessard/swift,devincoughlin/swift,apple/swift,OscarSwanros/swift,gribozavr/swift,brentdax/swift,roambotics/swift,natecook1000/swift,practicalswift/swift,tjw/swift,natecook1000/swift,harlanhaskins/swift,ahoppen/swift,devincoughlin/swift